“This may take some time”, he said. Executives in the company, like Zuckerberg and others, have seen their old messages deleted. As per Tech Crunch report, unless the “Unsend” feature is released for everyone, Facebook will not unsend or retract any more of Zuckerberg messages.

The announcement came only hours after it was revealed the Facebook CEO had the ability to delete messages from conversations entirely, unlike everyone else.

Messages from Mark Zuckerberg were removed from users’ inboxes.

“From now on, every advertiser who wants to run political or issue ads will need to be verified”. Going forward, anyone in the United States buying political ads on Facebook must submit government-issued ID and a USA mailing address.

Facebook will also require the administrators of pages with a “large number” of followers to also be verified.

With Facebook still being hammered for its actions regarding user data and privacy, Zuckerberg is slated to testify before Congress this coming Tuesday.

Moscow has denied the allegations.

Critics have pilloried the company for letting Russian operatives spread misinformation during the 2016 presidential campaign, and the new policy was welcomed in Washington, where lawmakers have been working on legislation that would force social media companies to be more transparent about who is buying certain kinds of ads. “It’s going to help us a lot because they’re the biggest platform, but what about Twitter?”

That legislation is aimed at countering concerns about foreign nationals using social media to influence American politics, which is part of the investigation into possible Russian meddling during the 2016 U.S. presidential campaign. The bill would put requirements on online political ads similar to what ads on broadcast television face.

Three weeks after Facebook banned Cambridge Analytica, a UK-based political data analysis firm the social network said improperly received as many as 87 million user profiles leaked from its service, Facebook has made a second high-profile move.

Cambridge Analytica tweeted on Wednesday, “When Facebook contacted us to let us know the data had been improperly obtained, we immediately deleted the raw data from our file server, and began the process of searching for and removing any of its derivatives in our system”. Facebook also acknowledged this week that almost all of its 2.2 billion users may have had their public data scraped by “malicious actors” it did not name.

The Cambridge Analytica scandal is making people hyper-aware of how much their private information is available not just to Facebook, but to anyone savvy enough to get it.